Loop cosmological implications of a non-minimally coupled scalar field
| dc.creator | Bojowald, Martin | |
| dc.creator | Kagan, Mikhail | |
| dc.date | 2006-06-19 | |
| dc.date.accessioned | 2026-07-07T07:13:11Z | |
| dc.date.available | 2026-07-07T07:13:11Z | |
| dc.description | Non-minimal actions with matter represented by a scalar field coupled to gravity are considered in the context of a homogeneous and isotropic universe. The coupling is of the form $-ξ/2 ϕ^2 R$. The possibility of successful inflation is investigated taking into account features of loop cosmology. For that end a conformal transformation is performed. That brings the theory into the standard minimally coupled form (Einstein frame) with some effective field and its potential. Both analytical and numerical estimates show that a negative coupling constant is preferable for successful inflation. Moreover, provided fixed initial conditions, larger $|ξ|$ leads to a greater number of {\em e}-folds. The latter is obtained for a reasonable range of initial conditions and the coupling parameter and indicates a possibility for successful inflation. | |
| dc.description | 10 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/gr-qc/0606082 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/0606082 | |
| dc.identifier | Phys.Rev. D74 (2006) 044033 | |
| dc.identifier | doi:10.1103/PhysRevD.74.044033 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/112360 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | Astrophysics | |
| dc.title | Loop cosmological implications of a non-minimally coupled scalar field | |
| dc.type | text |